摘要:
The invention concerns a method for detecting and/or determining characteristics related to remarkable points in an image, characterised in that it consists in evaluating the local dip variability of a first point in the image relative to at least another point located in the proximity of said first point, by computing the local anisotropy on said point gradient field, said anisotropy being dependent on terms related to a dispersion of orientations and to the module of gradient vectors, and at least one of said terms is weighted.
摘要:
The invention concerns a method for characterising the coherence of an environment characteristic measurements, consisting in: taking N types of reference measurements in each observation (Xi) of a reference set; constituting at least a training set with N dimensions containing all said observations (Xi); taking at least N application measurements in each observation (Qi) of an application set; comparing each application observation (x) with all the observations (Xi). The invention is characterised in that it further consists in: constructing for each observation (Xi) a neighbouring domain (Di), said neighbouring domains constituting said training set and an acceptation class (Ca), and defining a degree of appurtenance of the application observations (x) to said acceptation class (Ca). The invention is particularly applicable to the identification of a lithologic facies in an oil field.
摘要:
The invention concerns a method for the automatic analysis of frequency passband of recorded signals, characterised in that it consists in: a) applying a Fourier transform on at least one of the signals to obtain an amplitude spectrum of said signal; b) producing a mean spectrum of said amplitude spectrum; c) analysing said mean spectrum so as to produce a spectral component representing said signal; d) determining, on the basis of the representative spectral component, the minimum (Fmin) and maximum (Fmax) frequency values for which the amplitude of said spectral component is equal to half (Amax/2) of the maximum amplitude (Amax). The invention is particularly useful for determining the passband of seismic signals.
摘要:
The use of a buried or covered flexible sea-bed pipeline for transporting fluids is disclosed. The pipeline comprises a sealing barrier (3) and reinforcing layers (4, 5) capable of withstanding mechanical stress and arranged around said sealing barrier. The reinforcing layers consist of at least two crosswise-arranged reinforcing plies (4, 5) of wires helically wound at respective winding angles ai to the longitudinal axis of the pipeline, such that they comply with the following relationships: when i = 1, 2, ..., 52° ≤ ai ≤ 58°. The arithmetic mean am of said winding angles ai complies with the following relationship: 53° ≤ am ≤ 57°.
摘要:
A seismic reflection data acquisition and processing method and device for prospecting in tectonically complex environments are disclosed. In particular, the seismic reflection data acquisition and processing method is useful for providing a summation rate tensor field and a 3D image unit, e.g. in 3D earth seismics or complex tectonics.
摘要:
A flexible tubular pipe with an internal impervious polymeric sheath, including at least, from the inside outwards, an internal pervious metal shell (1) with an outer surface having interstices (9), an internal impervious polymeric sheath (2), a set of armouring wire webs (3, 4) and an outer protective sheath (5). Said internal impervious polymeric sheath (2) mainly includes a portion made of a thermoplastic polymer combining at least two fluoromonomers of which at least one has at least one alkoxy function, and said portion made of a thermoplastic polymer is in the form of a continuous tubular layer having no incipient tears in the region of said interstices (9).
摘要:
La présente invention concerne une nouvelle composition thérapeutique comprenant un composant phénol et de la propolis et utile en tant que moyen antiviral vis-à-vis des virus à capside lipidique, caractérisée en ce qu'elle renferme (i) de 100 à 650 parties en poids de composant phénol pour (ii) une partie en poids de propolis. Cette nouvelle composition est particulièrement utile dans le traitement de l'herpès, notamment les maladies provoquées par les souches virales HSV1, HSV2 et HSV1R.
摘要:
Il est du type comportant un tube de remplissage (1) d'axe vertical et disposé dans ladite cuve, un clapet de fermeture (3) disposé dans ledit tube de remplissage et mobile entre une position d'ouverture verticale et une position de fermeture correspondant à un appui dudit clapet sur un siège de clapet (5) ménagé dans ledit tube de remplissage, un flotteur (7) relié élastiquement audit clapet et susceptible de déplacer ledit clapet entre les positions d'ouverture et de fermeture, et il est caractérisé en ce que le siège de clapet est incliné par rapport à l'axe vertical dudit tube de remplissage, et en ce que le clapet est monté sur un axe de pivotement disposé entre les extrémités du clapet et excentré par rapport à l'axe vertical du tube de remplissage.
摘要:
The invention concerns a device for limiting the bending radius of a flexible duct comprising at least a bend stiffener (7) arranged around one length of the flexible duct and fixed by a rear part on a fixed end support (19), characterised in that it further comprises an element for maintaining (6, 6', 6') the bend stiffener (7) arranged between the flexible duct (1) and the bend stiffener (7) and comprising at least a portion capable of flexural bending extending over one length of the flexible duct located at least between the rear part and the end of the bend stiffener.
摘要:
The invention features an offshore oil installation (1) comprising two mounting plates (6, 8) resting on the ocean bed, each mounting plate (6, 8) supporting a manifold (10; 10') connected at two ends with two respective terminal joining pieces of flexible pipe sections (5, 7; 7, 9) fixed to the manifold (10; 10') substantially in the extension of each other, each manifold (10; 10') further comprising a flange for sealed joining with a pipe (12) coming from an underwater structure such as a wellhead (2; 3), the manifolds (10; 10') of the two supporting plates (6; 8) being interconnected at one end by a flexible pipe section (7) and connected at the other end by two respective pipe sections (5, 9) to a surface extracting installation (4).